4. The black, Javan and Sumatran species are browsers, wrapping their prehensile upper lip around leaves and twigs when foraging. White and India rhinos are considered to be grazers.

5. Rhinos are part of a group of animals called Perissodactyla, which are odd-toed ungulates. There are only three extant animal famillies in this group – Rhinocerotidae (rhinos), Equidae (horses, zebras and asses) and Tapiridae (tapirs).

6. Rhinos have between 24 to 34 teeth, depending on the species.

7. Rhino horns are made of keratin, the same substance that makes up our nails and hair. It has no medical properties despite being used in traditional Asian medicine.

8. Rhinos have fantastic hearing and a great sense of smell, but have terrible eyesight. They will struggle to spot something further than 30m away.

9. Rhinos love wallowing. By covering themselves with mud and letting it dry they are protecting their skin from the sun. Rhinos will rub their bodies against tree trunks and rocks to remove ectoparasites, such as ticks, which have become stuck in the dry mud on their skin.

10. Rhino gestation lasts between 15 and 16 months, usually giving birth to just one calf (twins are very rare). Young rhinos will remain with their mothers until they are between two or three years old.

11. Rhino home ranges are marked with dung heaps called middens that are used by both male and females to communicate their whereabouts and reproductive condition.

12. Oxpeckers have a symbiotic relationship with rhinos. Rhinos have a host of ectoparasites on their hide that the birds eat, keeping the rhino free of parasites. The oxpeckers can also raise the alarm, warning the rhino if any danger is about.